Basilica of Saint Stephen in the Round on the Caelian Hill, Rome

The Basilica of Saint Stephen in the Round on the Caelian Hill, commonly known as Santo Stefano Rotondo, is one of the most architecturally unique and historically significant churches in Rome. Consecrated between 468 and 483 AD by Pope Simplicius, this ancient basilica was the first church in Rome built on a circular plan鈥攁 design inspired by early Christian martyria and highly unusual in the context of Roman architecture. Located on the Caelian Hill, the church was financed by the noble Valerius family, who had strong ties to the Holy Land and were influential in establishing this sacred space. Saint Stephen in the Round is not only dedicated to Saint Stephen the Protomartyr but also to Stephen I, the first canonized king of Hungary, making it Hungary鈥檚 national church in Rome and the rectory church of the Pontifical Collegium Germanicum et Hungaricum.

Though its interior retains the original circular design, the church鈥檚 exterior features a cruciform layout, with a striking 12th-century portico added by Pope Innocent II. Inside, the circular nave is ringed with tall Corinthian columns and richly adorned with frescoes. Among the most powerful visual elements are the 34 graphic martyrdom scenes painted in the 16th century by Niccol貌 Circignani (Pomarancio) and Antonio Tempesta, commissioned by Pope Gregory XIII. These frescoes offer a vivid reminder of early Christian suffering and faith. The high altar, created by the Renaissance artist Bernardo Rossellino, and a 6th-century chair attributed to Pope Gregory the Great further enhance the church鈥檚 spiritual and artistic significance.

Several chapels add further depth to Saint Stephen in the Round鈥檚 cultural and religious legacy. The Chapel of Saints Primus and Felician, built in the 7th century by Pope Theodore I, houses mosaics depicting the martyrs with a jeweled cross and preserves their relics alongside those of the pope鈥檚 father. The so-called "Hungarian Chapel" is dedicated to Stephen I of Hungary, featuring recently restored late-antique marble flooring and 18th-century frescoes that conceal older layers of artwork still being studied. These chapels reflect the church鈥檚 enduring connections to both Eastern Christianity and Central European history.

Beneath the basilica lies an intriguing archaeological layer: a 2nd-century mithraeum, a subterranean sanctuary used for the worship of the Persian god Mithras, once frequented by Roman soldiers stationed nearby.

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Sight Name: Basilica of Saint Stephen in the Round on the Caelian Hill
Sight Location: Rome, Italy (See walking tours in Rome)
Sight Type: Religious

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